Hack saw



Jan. 19,1932.

o'. E. NEWBAUER HACK sAw Filed sept. 5o, 1931 /N VENTOR @sgr E. Newll'auer A T T ORNE Y Patented Jan;Y 19, 719325 OSCAR E. NEWBAUER,IOF ROCHESTER, NEW YORK I HACK sew Application led. September 391.21931. Serial No. 565,948.

` This invention relates to'iniprovements in haclr saws of the kind having detachable or interchangeable yblades and employed for sawing rmetal parts. 1

-5 The principal object of the invention yis the provision of a saw of this kind having a frame provided with simpley and convenient means. for conveniently storingblades not in use;

, Anotherobject ofthe invention isthe'provision of a sawjframeof this kind having a saw blade receptacle or magazine in its back .and a simple and'convenlent closure Afor said receptacle. f

Y 15 Still another object of the-invention is the provision of asaw yframe having ,a blade magazine 'with simple means for ejecting bladestherefrom.v

To these and otherends,` the invention consist-s in the construction and arrangement of parts that will yappear from the following descriptionpwhen' read in' conjunction with the accompanying drawings," the novel features Vbeing ypointed outin the claims at the end of the specification.

In the drawings:

Fig. 1 is a side elevation of a hack saw constructed accordingto one embodiment of the invention; f Fig. 2 is a fragmentary view in side elevation of the back part of the frame showing the closure for the magazine in partly open position; f Fig. 3 is an enlarged section taken substantially on line" 3 3 of Fig. 2 vand looking in theV direction of the arrow at said line;

Fig. 4 isan enlarged section taken substantially 0n line 4 4' ofFig. l and looking in i the direction of the arrow at said line, and

Fig. 5 is a similar view on line 5 5 vof Fig. 1.

ySimilar reference numerals refer to the same part in all the figures of the drawings.

The invention is illustrated applied to a .45 haclr'saw of usual or common construction.'V

comprisinga frame having a back l, from the ends of which the arms 2 and 3 'project in the `same plane. Bosses or sockets i and 5 are provided on the ends of the arms 2 and y3 in which blade engaging or supporting members 6 and 7 are or mayV be slidably mounted. 'Y The members 6 and 7 may be provided with studs 8 and 9 for cooperation with openings provided therefor' adjacent the opposite ends ofa'saw blade Al1. The"memberr 55V i 6 may project through the soclret 4L and at' its outer end maybe provided with va handle l2 arranged. to engage the outer end of the socket i and limitthe inwardmovement of the member 6 therein. VThe member? pro- 60 jects through the socket 5 and is threaded on its outer end for cooperation with a butterfly nut lfwhich engages the outer end ofthe socket f5 yandis operative to adjust themember Z toward or from the member 6 orY to vary 65 the tension on "a saw blade ll mountedy on andbetweensaid members.`

rlfhe back l ofthe frame is preferably formedv of sheet material bent on `itself to form a Ushaped channel, as more kclearly i capable of being mounted in the frame and preferably ofl a widthsutlicient to receive a plurality 'of saw blades. 4

It will be noted that the U-shaped back member isclosed at its ends tovv provide a magazine or receptacle for sawblades, and

means are provided for closing the open upy per side thereof. To this end, a cover or lid f 14 is provided; The cover is also U-shaped in cross-section and of a width to it over the sides ofv` the channel member to which it is pivoted at l5..v The cover 14 extends through- 90' out the length of the channel, member, Aand interengaging means, such as the detents 16, may be provided on the cover and channel member. for retaining the cover in closed position on the'channel member. itis desirable to'provide means for conveniently` disengaging the detents to separate'the free end of the cover from the channel member. To this end, an ejector Vis provided in the form of alever 17 pivotally lo@ mounted between the walls of the channel member and projecting outwardly therefrom at one end over the adjacent arm 3 which may be cut away as shown at 18 to provide a clearance therefor. The outwardly projecting end of the ejector forms a finger piece, and its other end projects inwardly between the sides of the channel and under the end of the cover 14 when the latter is in closed position. By pressing the outer end of the ejector, its inner end is moved outwardly and moves the cover with it and disengages its detents and moves it from the channel member.

Resilient means are provided for throwing or lifting the cover from the channel member when the detents are disengaged. To this end, a leaf spring 19 is secured to the cover at one end, as at 20, by means of a rivet or other suit-able device. The spring 19 is arranged between the side walls of the cover and curves outwardly from its fixed end and then inwardly between the side walls of the cover into engagement with the cover. When the cover is closed, the spring engages any saw blades arranged in the magazine, which engagement moves the spring into the cover and tensions it between the cover and the saw blades in the magazine. By this arrangement, when the cover is released from the magazine by the linger piece 17, the springreacts to swing` the cover from the magazine. It will also be noted that by its engagement with the saw bl ades in the magazine, the spring serves to hold them against movement therein when the cover is closed.

lVben a plural" y blades are arranged at one tane in the magazine, ditficiilty is experienced in removing a selected sav blade therefrom. To overcome this difliculty, means are provided for ejecting or lifting one end of the blades from the magazine so that any selected blade may be removed therefrom. To this end, the side walls of the magazine are provided with vertically arranged slots 21 in which an ejector is slidably mounted. Said ejector comprises a pin or rod 22 arranged in said slots and having enlarged or headed ends which engage the outer walls of the magazine and retain it therein. The ejector is preferably arranged adjacent that end of the magazine which is adjacent the free end of the cover and so that the blades in the magazine rest thereon, as seen in Fig. 3 of the drawings. By moving the ejector in its slots from the Fig. 3 position, the saw blades contained in the magazine are lifted therefrom and any selected blade may be re moved.

Although only one embodiment of the invention is shown and described herein, it will be `understood that this application is intended to cover such changes or modifications as come within the spirit of the invention o :scopeof the following/claims. v j v V I claim:

l. A hack saw comprising a frame having a hollow back member open along one of its longitudinal sides, a cover pivoted thereto adjacent one end, and means for detachably securing the cover at its other end.

2. A hack saw comprising a frame having a hollow back member open along one of its longitudinal sides, a cover pivoted thereto adjacent one end, means for detachably securing the cover at its other end, and hand operated means for detaching the cover at said other end.

3. A hack saw comprising a frame having a hollow back member open along one of its longitudinal sides, acover pivoted thereto adjacent one end, means` for detachably securing the cover at its other end, hand operated means for detaching the cover at said other Vend, and resilient means for swinging the cover to open position when detached from said securing means.

4. A hack saw comprising a frame having a hollow member having an open side and adapted to receive blades, a closure therefor, and resilient means on said closure adapted to engage blades in said hollow member and retain them against movement therein.

5. A hack saw comprising a frame having a hollow member having an openside and adapted to receive blades, a closure therefor, and means movably mounted in said hollow member for ej ecting blades therefrom.

6. A hack saw comprising a frame having a hollow channel member having an open side and adapted to receive bla des, and an ejector slidably mounted in the walls of said member and movable toward said open side and engageable with blades in said channel member for lifting them therefrom.

In witness whereof, I have hereunto signed my name. f

OSCAR- E. NEVBAUER.

its 

